What do you do if you're a street artist turned marketing phenom who uses other people's images when someone uses one of your designs? If you're Shepard Fairey, apparently, you call your lawyers. Fairey, of Obama HOPE poster fame, is defending himself against charges he infringed on an Associated Press copyrighted photo in making the poster. He's also been criticized by artists for using others' work without attribution. His lawyers claim in the AP case that he is protected by fair use provisions of the copyright law. It turns out, however, that the activist art appropriator is a wee bit...